Dead throttle pedal, weird trans stuff..

[CarlAlberts0616]

First post! Howdy y'all. I have heard good things about these forums.

 

Anyway, my truck (see sig) has some weird issues. It runs great, then all of a sudden it will lose throttle, pedal it a little and it will come back. It is also shifting very erratically. 1st sometimes hangs, 2nd to 3rd normally fine, 3rd to OD and lockup it hunts really bad for both.. Going to check alternator for Ac voltage tomorrow and add/clean grounds and some of the normal things. Anything else I should check or do? Has a brand new Industrial Injection VP and Fass lift pump. When the truck runs, she runs good. Fast, strong, shifts GREAT. 

Also, no codes thrown! Validated with Snap-On scanner.. 

All suggestions appreciated, thanks! 

Edited July 17, 2019 by CarlAlberts0616

[JAG1]

You could disconnect the two alternator excitement wires off the back of the alternator and see if symptoms go away.

 

Another much needed upgrade that's helped many in your situation is doing the 'W-T's Grounding Mods'. It is in the article data base for 2nd gens.

 

Also upgrading to the Timbo APPs, is better built, less expensive and more reliable. A new VP with a Timbo Apps goes well together.

 

What level of AC volts are you seeing?

[CarlAlberts0616]

I figured it out. Was putting out a ton of AC current. Unplugged the alt and so far its normal. We will see about the dead pedal. But its looking good..

[JAG1]

Glad to know this forum has helped anyway.

 

Please let us know the final outcome.

[CarlAlberts0616]

They sure have. Im 98% thats it. Was getting .48VAC which is too much. Getting a new one from my local alt rebuildiner. This ones original and the case is pretty crusty.

 

We unplugged the alt and took it for a drive. Was 100% normal. So hopefully thats it. 

 

Will report back soon. Thanks!

[Mopar1973Man]

AC noise you need the W-T ground wire mod.

 

Then for the dead pedal it could be APPS sensor failing check for a P0121, P0122 or P0123 code.

[CarlAlberts0616]

Thanks. I will do the WT wire mod. I havent had the dead pedal since i replaced the alternator. Trans isnt shifting eratic though, which is good. It is 90% better. As of now i just need to figure out why its winding out so much. I am going to check TV cable adjustment tonight.